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qt'QWidgetStack (./qt-2.1.0/src/widgets/qwidgetstack.h:39)

class Q_EXPORT QWidgetStack: public QFrame
{
    Q_OBJECT
public:
    QWidgetStack( QWidget * parent = 0, const char *name = 0 );
    ~QWidgetStack();

    void addWidget( QWidget *, int );
    void removeWidget( QWidget * );

    QSize sizeHint() const;
    QSize minimumSizeHint() const;
    void show();

    QWidget * widget( int ) const;
    int id( QWidget * ) const;

    QWidget * visibleWidget() const;

    void setFrameRect( const QRect & );

signals:
    void aboutToShow( int );
    void aboutToShow( QWidget * );

public slots:
    void raiseWidget( int );
    void raiseWidget( QWidget * );

protected:
    void frameChanged();
    void resizeEvent( QResizeEvent * );

    virtual void setChildGeometries();
    void childEvent( QChildEvent * );

private:
    bool isMyChild( QWidget * );

    QWidgetStackPrivate * d;
    QIntDict<QWidget> * dict;
    QPtrDict<QWidget> * focusWidgets;
    QWidget * topWidget;
    QWidget * invisible;

private:	// Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QWidgetStack( const QWidgetStack & );
    QWidgetStack& operator=( const QWidgetStack & );
#endif
};